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Polished fossil stromatolite. Alcheringa narrina. ALC139 magnesite Weighs 608 grams

SKU 81112247273
4.4
Description

Weighs 608 grams

Dimensions at widest points approximately 120 mm x 60 mm x 11 mm thick

These interesting mineral oddities occur in the banks of the Gascoyne River about 130 km east of Carnarvon

Weighs 274 grams

Dimensions at widest points approximately 125 mm x 110 mm x 19 mm thick

Polished fossil stromatolite. Alcheringa narrina. ALC139 magnesite Weighs 608 gramsALC139. Fossil stromatolite rough rock, cut and polished on one side . Alcheringa narrina from the Archaean Meentheena Member within the Tumbiana Formation. Age is approx. 2. 7 billion years. From near Nullagine in Western Australia. Approx. 120mm x 95mm x 50mm thick. This piece has a smattering of pyrite inclusions through it. Rare. Weighs 790grams.

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